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Finding Area of a Triangle - Printable Mathematics Worksheets - Wayground

Finding Area of a Triangle

14 questions

6th - 7th Grade

Mathematics

Finding Area of a Triangle is a Grade 6–7 mathematics worksheet that helps students calculate triangle area using the formula A = ½ × base × height. Across 14 multiple-choice questions, students use given measurements in millimeters, centimeters, meters, feet, miles, kilometers, and inches, then select the answer expressed in square units. Several items also ask students to determine area from a pictured triangle. This free printable worksheet gives students focused practice multiplying the base and height, taking half of the product, and recording an appropriate square-unit answer. It is useful for introducing the formula, reinforcing accurate calculation, or checking whether students can distinguish triangle area from the full base-by-height product. A complete answer key is included for efficient review and grading.

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Finding Area of a Triangle

Total questions: 14

Name
Class
Date
1.
Find the area of a triangle with a height of 4 mm and a base of 6 mm?
a)
5 mm squared
b)
6 mm squared
c)
12 mm squared
d)
24 mm squared
2.
Find the area of a triangle with a height of 4 mm and a base of 6 mm?
a)
5 mm squared
b)
6 mm squared
c)
12 mm squared
d)
24 mm squared
3.
Find the area of a triangle with a base of 7 mm and a height of 10 mm?
a)
70 mm squared
b)
35 mm squared
c)
17 mm squared
d)
8.5 mm squared
4.
What is the area of a triangle with a base of 10 cm and a height of 14 cm?
a)
24 cm squared
b)
12 cm squared
c)
70 cm squared
d)
140 cm squared
5.
What is the area of the triangle shown below?
What is the area of the triangle shown below?
a)
44.4 mm²
b)
5.92 mm²
c)
8.88 mm²
d)
17.76 mm²
6.
Find the Area of this triangle
Find the Area of this triangle
a)
19.8 km2
b)
37.8 km2
c)
18.9 km2
d)
35 km2
7.
What is the area of a triangle with a base of 9 cm and a height of 4 cm?
a)
8 cm squared
b)
6 cm squared
c)
36 cm squared
d)
18 cm squared
8.
What is the area of a triangle with a height of 6 m and a base of 14 m?
a)
42 meters squared
b)
20 meters squared
c)
84 meters squared
d)
10 meters squared
9.
What is the area of a triangle with a height of 10 m and a base of 6 m?
a)
35 mm squared
b)
16 mm squared
c)
60 mm squared
d)
30 mm squared
10.
A triangle with a height of 11 ft and a base of 8 ft has an area of what?
a)
88 ft squared
b)
19 ft squared
c)
3 ft squared
d)
44 ft squared
11.
Find the area.
Find the area.
a)
27.3 mi2
b)
54 mi2
c)
27 mi2
d)
54.6 mi2
12.
Find the area of this triangle.
Find the area of this triangle.
a)
20 cm2
b)
35 cm2
c)
40 cm2
d)
12.5 cm2
13.
Find the area
Find the area
a)
8 ft2
b)
8 ft3
c)
4 ft2
d)
4 ft3
14.
Find the area:
Find the area:
a)
24 in2
b)
12 in2
c)
6 in2
d)
3.5 in2
WaygroundAnswer Key

Finding Area of a Triangle

Total questions: 14

1.
c) 12 mm squared
2.
c) 12 mm squared
3.
b) 35 mm squared
4.
c) 70 cm squared
5.
c) 8.88 mm²
6.
c) 18.9 km2
7.
d) 18 cm squared
8.
a) 42 meters squared
9.
d) 30 mm squared
10.
d) 44 ft squared
11.
a) 27.3 mi2
12.
d) 12.5 cm2
13.
c) 4 ft2
14.
c) 6 in2

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FAQs

What does this Finding Area of a Triangle worksheet help students learn?

This worksheet helps Grade 6–7 students calculate the area of a triangle with A = ½ × base × height. Its 14 multiple-choice items require students to use base and height measurements, halve the product, and choose an answer in square units across varied units such as millimeters, centimeters, meters, feet, miles, kilometers, and inches.

How can I use this worksheet to teach the area of a triangle?

Introduce A = ½ × base × height by modeling one item: identify the base and height, multiply them, divide by 2, and label the result in square units. Then have students solve the multiple-choice questions independently, asking them to explain why the full base-by-height product must be halved and how they checked the units.

What mistakes should I watch for on this triangle area worksheet?

Watch for students choosing the product of the base and height without dividing by 2, a distractor built into several questions. Students may also use the wrong measurement as the height, overlook decimal measurements in pictured items, or report linear units instead of squared units; ask them to show the formula and label each result.

How do I assign and grade this triangle area worksheet?

The worksheet is available as a printable PDF and as a digital quiz on Wayground, so you can assign the 14 multiple-choice triangle-area questions in the format that fits your lesson. It includes a complete answer key, and printable submissions can be graded by scanning student work with the Wayground for Teachers app.

How can I differentiate this triangle area worksheet for my students?

Use the worksheet’s Advanced Settings to adjust font spacing or choose a larger font size so the base-and-height information and multiple-choice options are easier to read. You can also enable a dyslexia-friendly font or translate the triangle-area worksheet into another language when those changes support access to the questions.

Where can I find more worksheets like this on Wayground?

Wayground offers a broad collection of free printable worksheets and practice problems across subjects, with downloadable PDFs and answer keys to help students master essential skills and concepts. Browse more resources at https://wayground.com/en-us/worksheets.

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